zealot
/ˈziːəlɒt/Definitions
1. noun
A person who shows or expresses enthusiastic and often excessive enthusiasm or devotion, especially for a cause or an idea.
“The politician’s supporters were a group of zealous and outspoken zealots who would stop at nothing to see their candidate elected.”
2. noun
A member of a radical or fanatical group, often characterized by extreme and violent behavior.
“The cult was comprised of brainwashed zealots who refused to question their leader’s authority.”